CN111715723B - Production equipment and control method for high-temperature high-pressure seamless steel pipe - Google Patents
Production equipment and control method for high-temperature high-pressure seamless steel pipe Download PDFInfo
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- CN111715723B CN111715723B CN202010533572.1A CN202010533572A CN111715723B CN 111715723 B CN111715723 B CN 111715723B CN 202010533572 A CN202010533572 A CN 202010533572A CN 111715723 B CN111715723 B CN 111715723B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 203
- 239000010959 steel Substances 0.000 title claims abstract description 203
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 133
- 239000000843 powder Substances 0.000 claims abstract description 72
- 239000002893 slag Substances 0.000 claims abstract description 46
- 239000000919 ceramic Substances 0.000 claims abstract description 41
- 239000011521 glass Substances 0.000 claims abstract description 40
- 238000004512 die casting Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 239000007787 solid Substances 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims abstract description 12
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 9
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000000155 melt Substances 0.000 claims abstract description 7
- 239000013078 crystal Substances 0.000 claims description 18
- 239000011214 refractory ceramic Substances 0.000 claims description 18
- 238000007751 thermal spraying Methods 0.000 claims description 12
- 238000004321 preservation Methods 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 6
- 239000000156 glass melt Substances 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- 239000008234 soft water Substances 0.000 claims description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- 238000002425 crystallisation Methods 0.000 claims description 5
- 230000008025 crystallization Effects 0.000 claims description 5
- 239000003546 flue gas Substances 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 3
- 239000008233 hard water Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000002737 fuel gas Substances 0.000 claims 1
- 238000010791 quenching Methods 0.000 claims 1
- 230000000171 quenching effect Effects 0.000 claims 1
- 239000000779 smoke Substances 0.000 claims 1
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 2
- 241000207961 Sesamum Species 0.000 description 1
- 235000003434 Sesamum indicum Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
Abstract
The invention discloses production equipment and a control method of a high-temperature high-pressure seamless steel tube. The water pressed out by the water pump is sprayed in from the inlet of the cooling flat pipe through the electric adjusting water valve, the auxiliary material feeder is used for feeding rare earth and other materials into the front section of the chute, the paddles of the stirrer are used for stirring molten steel in the chute, and the ceramic spiral die casting machine is used for pressing out semi-solid molten steel with the crystallinity of 60-80%. The motor of the spiral feeding lifter and the motor of the core roller rotate, and the air plasma flame of the steel slag powder or glass powder thermal sprayer heats and melts the steel slag powder or glass powder and then sprays the molten steel slag powder or glass powder onto the hollow core roller. The ceramic valve is opened, molten steel is extruded from the annular molten steel outlet and is die-cast onto a hollow core roller with a steel slag film or a glass film. The roller motor rotates to drive the roller to rotate, so that the die-cast seamless steel tube blank is uniformly rolled. Water pressed out by the water pump is sprayed from the upper end of the hollow core roller through the electromagnetic water valve, and the equilateral triangle lifting plate rises upwards to pull out the hollow core roller from the seamless steel pipe.
Description
Technical field:
the invention relates to production equipment and a control method of a high-temperature high-pressure seamless steel pipe.
The background technology is as follows:
at present, the seamless steel tube in China is prepared by extruding molten steel refined by a converter onto a core roller, longitudinally moving and rotating the core roller, and wrapping a layer of solidified molten steel on the core roller to be rolled by a roller; and after the seamless steel tube sleeved on the core roller is cooled, the core roller is taken down and then is arranged on a roller pulling machine to pull out the core roller. Because the seamless steel tube is tightly attached to the core roller, the roller pulling is difficult, and the roller pulling consumes very large energy. Under a microscope, the seamless steel pipe looks like a dried paddy field, and the cracks of the connecting pieces; when the pressure is increased from normal temperature and normal pressure to high temperature and high pressure or when the pressure is reduced from high temperature and high pressure to normal temperature and normal pressure, cracks in the seamless steel pipe are enlarged. Such seamless steel pipes cannot be used in high temperature and high pressure equipment. The secondary heating boiler of the ultra-supercritical coal-fired generator set heats water in the boiler water pipe to be more than 500 ℃, and the water pressure in the boiler water pipe is very high. Therefore, the boiler water pipe is a high-temperature and high-pressure water pipe.
The semi-solid casting method comprises the following steps: the water pump pumps water from the water tank, the water pressed out by the water pump is sprayed from the inlet of the cooling flat pipe through the electric regulating water valve, and the computer controller regulates the electric regulating water valve according to the data of the temperature sensor and the vibration meter; the auxiliary material feeding machine feeds rare earth and other materials into molten steel in the front section of a chute according to a set speed and a set proportion, a motor of the stirring machine rotates, a blade of the stirring machine stirs the molten steel in the chute, so that the rare earth and other materials melted in the molten steel are uniformly mixed with the molten steel, crystal branches extending out from crystal nuclei during molten steel crystallization are cut off, the cut crystal branches form new crystal nuclei, the ceramic screw die casting machine extrudes steel with the crystallinity of 60% -80%, and the ceramic screw die casting machine is die-cast into a die, and the ceramic screw die casting machine is cooled to obtain the product.
The invention comprises the following steps:
a production device of high-temperature high-pressure seamless steel pipes. The upper ends of three support rods of the spiral feeding elevator are fixed on the top angles of the equilateral triangle top plates of the spiral feeding elevator, the middle parts of the three support rods of the spiral feeding elevator are fixed on the top angles of the equilateral triangle bottom plates of the spiral feeding elevator, the lower ends of the three support rods of the spiral feeding elevator are fixed on the cement base, and a plurality of equilateral triangle connecting rods are arranged between the three support rods of the spiral feeding elevator. The upper ends of the three screws of the spiral feeding elevator respectively pass through bearings on the top angles of the equilateral triangle top plates close to the spiral feeding elevator, then the upper ends of the three screws of the spiral feeding elevator are respectively provided with a screw driven gear, and the lower ends of the three screws of the spiral feeding elevator respectively pass through bearings on the top angles of the equilateral triangle bottom plates close to the spiral feeding elevator. The equilateral triangle top plate of the screw feeding lifter is provided with a screw feeding lifter motor, an output gear of the screw feeding lifter motor is meshed with three screw driven gears, and one screw driven gear of the screw feeding lifter is meshed with a screw counter gear. Three screws of the spiral feeding elevator respectively penetrate through nuts on the top angles of the equilateral triangle lifting plates of the spiral feeding elevator, the upper section of the hollow core roller is fixed at the center position of the equilateral triangle lifting plates of the spiral feeding elevator through a pressure bearing, the lower section of the hollow core roller penetrates through the center hole of the equilateral triangle bottom plate of the spiral feeding elevator, and a core roller gear is arranged at the upper end of the hollow core roller. The equilateral triangle lifting plate of the spiral feeding lifter is provided with a core roller motor, and an output gear of the core roller motor is meshed with the core roller gear. The annular molten steel water outlet is fixed on an equilateral triangle connecting rod of the spiral feeding lifter below the spiral feeding device of the annular sealer, the annular molten steel water outlet is sleeved on the hollow core roller, the annular sealer seals the upper surface of the annular molten steel water outlet, and the annular sealer is pressed into the annular molten steel water outlet or pulled out of the annular molten steel water outlet through the spiral feeding device of the annular sealer. A ceramic valve is arranged on the refractory ceramic pipe between the ceramic spiral die casting machine and the annular molten steel water outlet, and a heat preservation pipe is sleeved outside the refractory ceramic pipe between the annular molten steel water outlet and the ceramic valve. Three arc plates are arranged below the annular molten steel water outlet to seal the lower surface of the annular molten steel water outlet, the three arc plates can be turned down by 60 degrees by the three electromagnets, and the three electromagnets are fixed on an equilateral triangle connecting rod of the spiral feeding elevator. The three hands of the roller stripper are fixed on an equilateral triangle connecting rod of the spiral feeding lifter at the spiral feeding device of the roller stripper. The lower part of the roller stripper is provided with a plurality of groups of roller devices, each group of roller devices consists of three rollers with 120 radians apart, the rollers of each group of roller devices are fixed on an equilateral triangle connecting rod of the spiral feeding elevator through roller spiral feeding devices, the gear of each roller spiral feeding device is meshed with a roller counter gear, and the output gear of a roller motor is meshed with a roller gear. A robot and a metal belt conveyor are arranged beside the lower part of the supporting rod behind the last group of roller devices. A water tank is arranged beside the cement base, and a water pump is arranged above the water tank. Soft water from the water pump is connected to the upper end of the hollow core roller through the electromagnetic water valve, and a movable mechanical sealing ring is arranged between the upper end of the hollow core roller and the outlet of the soft water pipe. The steel slag powder or glass powder thermal spraying device is fixed on an equilateral triangle connecting rod between an equilateral triangle bottom plate of the spiral feeding elevator and the annular sealer, and air plasma flame of the steel slag powder or glass powder thermal spraying device heats and melts the steel slag powder or glass powder and then sprays the molten steel slag powder or glass powder onto the hollow core roller. The ceramic spiral die casting machine presses the semi-solid molten steel into the annular molten steel water outlet through the opened ceramic valve. An annular burner is sleeved outside the annular molten steel water outlet, and flue gas generated by the annular burner enters a gap between the refractory ceramic tube and the heat preservation tube.
A control method of high-temperature high-pressure seamless steel tube production equipment. The semi-solid die casting equipment consists of a chute, a cooling flat pipe, a stirrer, a ceramic spiral die casting machine, a temperature sensor, a vibration meter and a computer controller. The cooling flat pipe is arranged below the chute, the hard water pipe connected with the water pump is connected to the water nozzle at the inlet of the cooling flat pipe through the electric adjusting water valve, the probe of the temperature sensor is buried in molten steel at the front section of the chute, the auxiliary material throwing machine is arranged above the front section of the chute, the blade of the stirring machine is buried in molten steel of the chute, the probe of the vibration meter is buried in molten steel at the rear section of the chute, and the ceramic spiral die casting machine is arranged at the tail end of the chute. The water pump pumps water from the water tank, the water pressed out by the water pump is sprayed from the inlet of the cooling flat pipe through the electric adjusting water valve, and the computer controller adjusts the electric adjusting water valve according to the data of the temperature sensor and the vibration meter. The auxiliary material feeder is used for feeding rare earth and other materials into molten steel at the front section of a chute according to a set speed and a set proportion, a motor of the stirrer rotates, a blade of the stirrer stirs the molten steel in the chute, so that the rare earth and other materials melted in the molten steel are uniformly mixed with the molten steel, crystal branches extending out from crystal nuclei during molten steel crystallization are cut off, the cut crystal branches form new crystal nuclei, and the ceramic screw die casting machine is used for extruding semi-solid molten steel with the crystallinity of 60% -80%. The computer controller makes the motor of the screw feeding elevator rotate clockwise to drive the three screws of the screw feeding elevator to rotate anticlockwise. The three screws of the spiral feeding lifter respectively rotate anticlockwise in nuts on the top angles of the equilateral triangle lifting plates of the spiral feeding lifter, so that the equilateral triangle lifting plates of the spiral feeding lifter move downwards from the highest position. After the equilateral triangle lifting plate of the screw feeding lifter has been lowered to the first set position, the air plasma flame of the steel slag powder or glass powder thermal spraying device heats and melts the steel slag powder or glass powder and then sprays the molten steel slag powder or glass powder onto the hollow core roller, and the core roller motor arranged on the equilateral triangle lifting plate of the screw feeding lifter rotates to drive the hollow core roller to rotate, so that the steel slag melt or glass melt is uniformly sprayed onto the hollow core roller. The computer control instrument continuously rotates the motor of the spiral feeding lifter clockwise to drive the three screws of the spiral feeding lifter to rotate anticlockwise, after the equilateral triangle lifting plate of the spiral feeding lifter is lowered to a second set position by the data given by the screw counter of the spiral feeding lifter, the computer control instrument opens a ceramic valve arranged on a refractory ceramic tube between the ceramic spiral die casting machine and the annular molten steel water outlet, molten steel is extruded from the annular molten steel water outlet and is cast onto a hollow core roller with a steel slag film or a glass film, and the computer control instrument enables the three electromagnets to be communicated to enable the three arc plates to rotate downwards by 60 degrees. Each roller set can adjust the position of the roller according to the data given by the roller counter through the screw feeding device of the roller set, the roller motor rotates to drive the roller to rotate, and the roller of each roller set can uniformly roll the die-cast seamless steel tube blank. After the equilateral triangle lifting plate of the screw feeding lifter has fallen to the third set position, the computer controller extinguishes the air plasma flame of the steel slag powder or glass powder thermal spraying device, and the steel slag powder or glass powder thermal spraying device does not heat and melt the steel slag powder or glass powder and then sprays the steel slag powder or glass powder onto the hollow core roller. The computer control instrument closes a ceramic valve arranged on a refractory ceramic tube between the ceramic spiral die casting machine and the annular molten steel water outlet, and then the computer control instrument presses the annular sealer into the annular molten steel water outlet through a spiral feeding device of the annular sealer. The gas sprayed out of the nozzle of the annular burner is ignited, and the flue gas generated by the annular burner enters a gap between the refractory ceramic tube and the heat preservation tube to prevent the annular molten steel water outlet and the heat preservation managed molten iron from solidifying. After the equilateral triangle lifting plate of the screw feeding lifter has been lowered to the lowest position, the computer controller stops the motor of the screw feeding lifter. The three hands of the roller remover are driven by the spiral feeding device of the roller remover to extend out and press the upper end of the seamless steel tube. Water pressed out from the water pump enters the hollow core roller through the electromagnetic water valve which is electrified and opened, the hollow core roller is cooled and contracted, a gap is formed between the hollow core roller and the seamless steel pipe, and a steel slag melt film or a glass melt film between the hollow core roller and the seamless steel pipe plays a role in lubrication. The computer control instrument enables the motor of the spiral feeding elevator to rotate anticlockwise to drive the three screws of the spiral feeding elevator to rotate clockwise, the three screw ends of the spiral feeding elevator rotate clockwise in nuts on the top angles of the equilateral triangle lifting plates of the spiral feeding elevator respectively, the equilateral triangle lifting plates of the spiral feeding elevator move upwards, the hollow core roller is pulled out of the seamless steel pipe, water is cooled from the hollow core roller to the seamless steel pipe, and the seamless steel pipe is quenched. After the equilateral triangle lifting plate of the spiral feeding lifter has been lifted to the highest position, the hollow core roller is pulled out from the seamless steel pipe, the electromagnetic water valve is powered off by the computer controller, water pressed out from the water pump does not enter the hollow core roller any more, the motor of the spiral feeding lifter stops rotating by the computer controller, three hands of the roller remover retract under the drive of the spiral feeding device of the roller remover, the computer controller pulls out the annular sealer from the annular molten steel water outlet through the spiral feeding device of the annular sealer, each group of roller devices can adjust the position of the roller according to the data given by the roller counter through the spiral feeding device of the roller device and the roller motor stops rotating to ensure that the roller does not roll the seamless steel pipe any more, and the three electromagnets are powered off by the computer controller to ensure that the three arc plates return to the horizontal position to prepare for manufacturing the next seamless steel pipe under the action of the torsion spring. The seamless steel pipe falls into the lower sections of the three support rods of the spiral feeding elevator under the action of gravity and is taken onto a metal belt of the metal belt conveyor by a robot.
The special seamless steel tube is cast out by semi-solid molten steel and rolled, and has more crystal nucleus and less crystal branches in crystallization, and is like a sesame cake under a microscope. The special seamless steel pipe which is die-cast by using the semi-solid molten steel and then rolled does not generate cracks like the common seamless steel pipe which is die-cast by using the common molten steel and then rolled under the working condition of expansion and shrinkage after cooling at high temperature; and the mechanical strength of the special seamless steel pipe is doubled compared with that of the common seamless steel pipe, and the special seamless steel pipe can be suitable for high-temperature and high-pressure workplaces.
Description of the drawings:
the invention is described in further detail below with reference to the drawings and the detailed description.
Fig. 1 is a schematic structural view of a production facility of a high-temperature high-pressure seamless steel pipe according to the present invention.
The specific embodiment is as follows:
the production equipment of the high-temperature high-pressure seamless steel pipe is shown in figure 1. The upper ends of three support rods 4 of the spiral feeding elevator are fixed on the top angles of an equilateral triangle top plate 1 of the spiral feeding elevator, the middle parts of the three support rods 4 of the spiral feeding elevator are fixed on the top angles of an equilateral triangle bottom plate 2 of the spiral feeding elevator, the lower ends of the three support rods 4 of the spiral feeding elevator are fixed on a cement base 3, and a plurality of equilateral triangle connecting rods are arranged between the three support rods 4 of the spiral feeding elevator. The upper ends of three screws 6 of the spiral feeding elevator respectively pass through bearings close to the top angles of the equilateral triangle top plate 1 of the spiral feeding elevator, then the upper ends of the three screws 6 of the spiral feeding elevator are respectively provided with a screw driven gear, and the lower ends of the three screws 6 of the spiral feeding elevator respectively pass through bearings close to the top angles of the equilateral triangle bottom plate 2 of the spiral feeding elevator. The equilateral triangle top plate 1 of the screw feeding lifter is provided with a screw feeding lifter motor 5, an output gear of the screw feeding lifter motor 5 is meshed with three screw driven gears, and one screw driven gear of the screw feeding lifter is meshed with a screw counter gear. Three screws 6 of the spiral feeding elevator respectively penetrate through nuts on the top angles of an equilateral triangle lifting plate 7 of the spiral feeding elevator, the upper section of the hollow core roller 0 is fixed at the center position of the equilateral triangle lifting plate 7 of the spiral feeding elevator through a pressure bearing, the lower section of the hollow core roller 0 penetrates through the center hole of an equilateral triangle bottom plate of the spiral feeding elevator, and a core roller gear is arranged at the upper end of the hollow core roller 0. The equilateral triangle lifting plate 7 of the spiral feeding lifter is provided with a core roller motor 8, and an output gear of the core roller motor 8 is meshed with the core roller gear. The annular molten steel water outlet 10 is fixed on an equilateral triangle connecting rod of a screw feeding lifter below a screw feeding device of the annular sealer, the annular molten steel water outlet 10 is sleeved on the hollow core roller 0, the annular sealer seals the upper surface of the annular molten steel water outlet 10, and the annular sealer is pressed into the annular molten steel water outlet 10 or pulled out of the annular molten steel water outlet 10 through the screw feeding device of the annular sealer. A ceramic valve 18 is arranged on the refractory ceramic pipe between the ceramic spiral die casting machine 17 and the annular molten steel water outlet, and a heat preservation pipe is sleeved outside the refractory ceramic pipe between the annular molten steel water outlet 10 and the ceramic valve 18. The lower surface of the annular molten steel water outlet 10 is sealed by three arc plates, the three arc plates can be rotated downwards by 60 degrees by the three electromagnets, and the three electromagnets are fixed on an equilateral triangle connecting rod of the spiral feeding elevator. The lower part of the three arc plates is provided with a roller remover 11, three hands of the roller remover 11 are driven by a screw feeding device of the roller remover to extend out and press the upper end of the seamless steel tube, and the three hands of the roller remover 11 are fixed on an equilateral triangle connecting rod of the screw feeding lifter at the screw feeding device of the roller remover. The lower part of the roller stripper 11 is provided with a plurality of groups of roller devices 12, each group of roller devices 12 consists of three rollers with 120 radians apart, the rollers of each group of roller devices 12 are fixed on an equilateral triangle connecting rod of the spiral feeding lifter through roller spiral feeding devices, a gear of each roller spiral feeding device is meshed with a roller counter gear, and an output gear of a roller motor is meshed with the roller gear. A robot and a metal belt conveyor are installed beside the lower part of the supporting rod behind the last group of rollers 12. A water tank 19 is arranged beside the cement base 3, and a water pump 20 is arranged above the water tank 19. Soft water from the water pump 20 is connected to the upper end of the hollow core roller 0 through the electromagnetic water valve 22, and a movable mechanical sealing ring is arranged between the upper end of the hollow core roller 0 and the outlet of the soft water pipe. The steel slag powder or glass powder thermal sprayer 9 is fixed on an equilateral triangle connecting rod between the equilateral triangle bottom plate 7 of the spiral feeding elevator and the annular sealer, and the steel slag powder or glass powder thermal sprayer 9 heats and melts the steel slag powder or glass powder by air plasma flame and then sprays the steel slag powder or glass powder onto the hollow core roller 0. The ceramic screw die casting machine 17 presses the semi-solid molten steel into the annular molten steel outlet 10 through the opened ceramic valve 18. An annular burner is sleeved outside the annular molten steel outlet 10, and flue gas generated by the annular burner enters a gap between the refractory ceramic tube and the heat preservation tube.
A control method of high-temperature high-pressure seamless steel pipe production equipment shown in figure 1. The semi-solid die casting equipment consists of a chute 13, a cooling flat pipe 14, a stirrer 16, a ceramic spiral die casting machine 17, a temperature sensor, a vibration meter and a computer controller. The cooling flat pipe 14 is arranged below the chute 13, a hard water pipe connected with the water pump 20 is connected to a water spray nozzle at the inlet of the cooling flat pipe 14 through an electric adjusting water valve 21, a probe of a temperature sensor is buried in molten steel at the front section of the chute 13, the auxiliary material feeder 15 is arranged above the front section of the chute 13, a blade of the stirrer 16 is buried in molten steel of the chute 13, a probe of a vibrating meter is buried in molten steel at the rear section of the chute 13, and the ceramic spiral die casting machine 17 is arranged at the tail end of the chute 13. The water pump 20 pumps water from the water pool 19, the water pressed out by the water pump 20 is sprayed from the inlet of the cooling flat pipe 14 through the electric regulating water valve 21, and the computer controller regulates the electric regulating water valve 21 according to the data of the temperature sensor and the vibration meter. The auxiliary material feeder 15 feeds rare earth and other materials into molten steel at the front section of the chute 13 according to a set speed and a set proportion, a motor of the stirrer 16 rotates, blades of the stirrer 16 stir the molten steel in the chute 13, the rare earth and other materials melted in the molten steel are uniformly mixed with the molten steel, crystal branches extending from crystal nuclei during molten steel crystallization are cut off, the cut crystal branches form new crystal nuclei, and the ceramic screw die casting machine 17 extrudes semi-solid molten steel with the crystallinity of 60% -80%. The computer controller makes the motor 5 of the spiral feeding lifter rotate clockwise to drive the three screws 6 of the spiral feeding lifter to rotate anticlockwise. The three screws 6 of the screw-in elevator are rotated counterclockwise in nuts on the top corners of the equilateral triangle elevator plate 7 of the screw-in elevator, respectively, so that the equilateral triangle elevator plate 7 of the screw-in elevator moves downward from the highest position. After the equilateral triangle lifting plate 7 of the screw feeding lifter has been lowered to the first set position, the air plasma flame of the steel slag powder or glass powder thermal spraying device 9 heats and melts the steel slag powder or glass powder and then sprays the molten steel slag powder or glass powder onto the hollow core roller 0, and the core roller motor 8 arranged on the equilateral triangle lifting plate 7 of the screw feeding lifter rotates to drive the hollow core roller 0 to rotate, so that the steel slag melt or glass melt is uniformly sprayed onto the hollow core roller 0. The computer controller continuously rotates the motor 5 of the spiral feeding lifter clockwise to drive the three screws 6 of the spiral feeding lifter to rotate anticlockwise, after the equilateral triangle lifting plate 7 of the spiral feeding lifter is lowered to the second set position by the data given by the screw counter of the spiral feeding lifter, the computer controller opens the ceramic valve 18 arranged on the refractory ceramic tube between the ceramic spiral die casting machine 17 and the annular molten steel water outlet 10, molten steel is extruded from the annular molten steel water outlet 10 to be cast onto the hollow core roller 0 with the steel slag film or the glass film, and the computer controller enables the three electromagnets to be communicated to enable the three arc plates to rotate downwards by 60 degrees. Each roller set can adjust the position of the roller according to the data given by the roller counter through the screw feeding device of the roller set 12, the roller motor rotates to drive the roller to rotate, and the roller of each roller set 12 can uniformly roll the die-cast seamless steel tube blank. After the equilateral triangle lifting plate 7 of the screw feeding lifter gives out data and the equilateral triangle lifting plate of the screw feeding lifter has fallen to the third set position, the computer controller causes the air plasma flame of the steel slag powder or glass powder thermal spraying device 9 to flameout, and the steel slag powder or glass powder thermal spraying device does not heat and melt the steel slag powder or glass powder any more and then sprays the steel slag powder or glass powder onto the hollow core roller 0. The computer control instrument closes a ceramic valve 18 arranged on a refractory ceramic tube between the ceramic spiral die casting machine 17 and the annular molten steel water outlet 10, and then the computer control instrument presses the annular sealer into the annular molten steel water outlet 10 through a spiral feeding device of the annular sealer. The gas sprayed out of the nozzle of the annular burner is ignited, and the flue gas generated by the annular burner enters a gap between the refractory ceramic tube and the heat preservation tube to prevent the annular molten steel water outlet 10 and the heat preservation-managed molten iron from solidifying. After the screw counter of the screw-feeding elevator gives data that the equilateral triangle-shaped elevator plate 7 of the screw-feeding elevator has been lowered to the lowest position, the computer controller stops the motor 5 of the screw-feeding elevator. The three hands of the roller remover 11 are driven by a spiral feeding device of the roller remover 11 to extend out and press the upper end of the seamless steel tube. Water pressed out from the water pump 20 enters the hollow core roller 0 through the electromagnetic water valve 22 which is electrified and opened, the hollow core roller 0 is cooled and contracted, a gap is formed between the hollow core roller 0 and the seamless steel pipe, and a steel slag melt film or a glass melt film between the hollow core roller 0 and the seamless steel pipe plays a role in lubrication. The computer control instrument enables the motor 5 of the spiral feeding elevator to rotate anticlockwise to drive the three screws 6 of the spiral feeding elevator to rotate clockwise, the three screw ends of the spiral feeding elevator rotate clockwise in nuts on the top angles of the equilateral triangle lifting plates 7 of the spiral feeding elevator respectively, the equilateral triangle lifting plates 7 of the spiral feeding elevator move upwards, the hollow core roller 0 is pulled out of the seamless steel pipe, water is cooled in the seamless steel pipe from the hollow core roller 0, and the seamless steel pipe is quenched. After the equilateral triangle lifting plate 7 of the screw-feeding lifter has been lifted to the highest position, the hollow core roller is pulled out of the seamless steel tube, the electromagnetic water valve 22 is powered off by the computer controller, water pressed out of the water pump 20 does not enter the hollow core roller 0 any more, the three hands of the stripper 11 retract under the drive of the screw-feeding device of the stripper, the annular sealer is pulled out of the annular molten steel water outlet 10 by the computer controller through the screw-feeding device of the annular sealer, the position of the roller is adjusted by the screw-feeding device of the roller counter according to the data given by the roller counter, the roller motor stops rotating to prevent the roller from rolling the seamless steel tube, and the three arc plates return to the horizontal position under the action of the torsion spring to prepare for manufacturing the next seamless steel tube. The seamless steel pipe falls into the lower sections of the three support rods 4 of the spiral feeding elevator under the action of gravity and is taken onto a metal belt of the metal belt conveyor by a robot.
Claims (2)
1. The upper ends of three support rods of the spiral feeding elevator are fixed on the top angles of an equilateral triangle top plate of the spiral feeding elevator, the middle parts of the three support rods of the spiral feeding elevator are fixed on the top angles of an equilateral triangle bottom plate of the spiral feeding elevator, the lower ends of the three support rods of the spiral feeding elevator are fixed on a cement base, and a plurality of equilateral triangle connecting rods are arranged between the three support rods of the spiral feeding elevator; the upper ends of three screws of the screw feeding elevator respectively pass through bearings on the top angles of the equilateral triangle top plates close to the screw feeding elevator, then a screw driven gear is respectively arranged at the upper ends of the three screws of the screw feeding elevator, the lower ends of the three screws of the screw feeding elevator respectively pass through bearings on the top angles of the equilateral triangle bottom plates close to the screw feeding elevator, a screw feeding elevator motor is arranged on the equilateral triangle top plates of the screw feeding elevator, an output gear of the screw feeding elevator motor is meshed with the three screw driven gears, and one screw driven gear of the screw feeding elevator is meshed with a screw counter gear; three screws of the spiral feeding lifter respectively penetrate through nuts on the top angles of the equilateral triangle lifting plates of the spiral feeding lifter, the upper section of the hollow core roller is fixed at the center position of the equilateral triangle lifting plates of the spiral feeding lifter through a pressure bearing, the lower section of the hollow core roller penetrates through the center hole of the equilateral triangle bottom plate of the spiral feeding lifter, a core roller gear is arranged at the upper end of the hollow core roller, a core roller motor is arranged on the equilateral triangle lifting plates of the spiral feeding lifter, an output gear of the core roller motor is meshed with the core roller gear, an annular molten steel water outlet is fixed on one equilateral triangle connecting rod of the spiral feeding lifter below the spiral feeding device of the annular sealer, the annular molten steel water outlet is sleeved on the hollow core roller, the annular sealer seals the upper surface of the annular molten steel water outlet, and the annular sealer is pressed into the annular molten steel water outlet or pulled out of the annular molten steel water outlet through the spiral feeding device of the annular sealer; a ceramic valve is arranged on the refractory ceramic pipe between the ceramic spiral die casting machine and the annular molten steel water outlet, and a heat preservation pipe is sleeved outside the refractory ceramic pipe between the annular molten steel water outlet and the ceramic valve; three arc plates are arranged below the annular molten steel water outlet to seal the lower surface of the annular molten steel water outlet, the three arc plates can be turned down by 60 degrees by the three electromagnets, and the three electromagnets are fixed on an equilateral triangle connecting rod of the spiral feeding elevator; the three hands of the roller stripper are fixed on an equilateral triangle connecting rod of the spiral feeding lifter at the spiral feeding device of the roller stripper; a robot and a metal belt conveyor are arranged beside the lower part of the supporting rod behind the last group of roller devices; a water tank is arranged beside the cement base, a water pump is arranged above the water tank, soft water connected with the water pump is connected to the upper end of the hollow core roller through an electromagnetic water valve, and a movable mechanical sealing ring is arranged between the upper end of the hollow core roller and an outlet of the soft water pipe; the method is characterized in that: the steel slag powder or glass powder thermal spraying device (9) is fixed on an equilateral triangle connecting rod between an equilateral triangle bottom plate of the spiral feeding elevator and the annular sealer, and air plasma flame of the steel slag powder or glass powder thermal spraying device (9) heats and melts the steel slag powder or glass powder and then sprays the molten steel slag powder or glass powder onto the hollow core roller (0); the ceramic spiral die casting machine (17) presses semi-solid molten steel into the annular molten steel water outlet (10) through the opened ceramic valve (18), an annular burner is sleeved outside the annular molten steel water outlet (10), and smoke generated by the annular burner enters a gap between the refractory ceramic tube and the heat preservation tube; the lower part of the roller stripper (11) is provided with a plurality of groups of roller devices (12), each group of roller devices consists of three rollers with 120 radians, the rollers of each group of roller devices (12) are fixed on an equilateral triangle connecting rod of the spiral feeding elevator through roller spiral feeding devices, a gear of each roller spiral feeding device is meshed with a roller counter gear, and an output gear of a roller motor is meshed with the roller gear.
2. The control method of the high-temperature high-pressure seamless steel pipe production equipment according to claim 1, wherein the semi-solid die casting equipment consists of a chute, a cooling flat pipe, a stirrer, a ceramic screw die casting machine, a temperature sensor, a vibration meter and a computer control instrument, the cooling flat pipe is arranged below the chute, a hard water pipe connected with a water pump is connected to a water spray nozzle at an inlet of the cooling flat pipe through an electric regulating water valve, a probe of the temperature sensor is buried in molten steel at a front section of the chute, an auxiliary material throwing machine is arranged above the front section of the chute, a blade of the stirrer is buried in molten steel of the chute, a probe of the vibration meter is buried in molten steel at a rear section of the chute, and the ceramic screw die casting machine is arranged at the tail end of the chute; the method is characterized in that: the water pump (20) pumps water from the water tank (19), the water pressed out by the water pump (20) is sprayed from the inlet of the cooling flat pipe (14) through the electric regulating water valve (21), and the computer control instrument regulates the electric regulating water valve (21) according to the data of the temperature sensor and the vibration meter; the auxiliary material feeder (15) is used for feeding rare earth and other materials into molten steel at the front section of the chute (13) according to a set speed and a set proportion, a motor of the stirrer (16) is rotated, a blade of the stirrer (16) is used for stirring the molten steel in the chute (13) so that the rare earth and other materials melted in the molten steel are uniformly mixed with the molten steel, crystal branches extending out from crystal nuclei during molten steel crystallization are cut off, the cut crystal branches form new crystal nuclei, and the ceramic screw die casting machine (17) is used for extruding semi-solid molten steel with the crystallinity of 60% -80%; the computer control instrument drives the motor (5) of the spiral feeding elevator to rotate clockwise to drive the three screws (6) of the spiral feeding elevator to rotate anticlockwise, the three screws (6) of the spiral feeding elevator rotate anticlockwise in nuts on the top angles of the equilateral triangle lifting plates (7) of the spiral feeding elevator respectively, so that the equilateral triangle lifting plates (7) of the spiral feeding elevator move downwards from the highest position, a screw counter of the spiral feeding elevator gives data to indicate that after the equilateral triangle lifting plates (7) of the spiral feeding elevator have fallen to the first set position, the air plasma flame of the steel slag powder or glass powder thermal sprayer (9) heats and melts the steel slag powder or glass powder and then sprays the steel slag powder or glass powder onto the hollow core roller (0), and a core roller motor (8) arranged on the equilateral triangle lifting plates (7) of the spiral feeding elevator rotates to drive the hollow core roller (0) to rotate, so that steel slag melt or glass melt is uniformly sprayed onto the hollow core roller (0); the computer control instrument continuously rotates the motor (5) of the spiral feeding elevator clockwise to drive the three screws (6) of the spiral feeding elevator to rotate anticlockwise, after the screw counter of the spiral feeding elevator gives out data and the equilateral triangle lifting plate (7) of the spiral feeding elevator has fallen to a second set position, the computer control instrument opens a ceramic valve (18) arranged on a refractory ceramic tube between the ceramic spiral die casting machine (17) and the annular molten steel water outlet (10), molten steel is extruded from the annular molten steel water outlet (10) to be die-cast onto a hollow core roller (0) with a steel slag film or a glass film on the way, and the computer control instrument enables three electromagnets to enable three arc plates to rotate downwards by 60 degrees; each group of roller devices can adjust the positions of rollers through a screw feeding device of the roller devices (12) according to data given by the roller counter, a roller motor rotates to drive the rollers to rotate, and the rollers of each group of roller devices (12) can uniformly roll the die-cast seamless steel tube blanks; after the screw counter of the screw feeding lifter gives out data and the equilateral triangle lifting plate (7) of the screw feeding lifter has fallen to a third set position, the computer controller causes the air plasma flame of the steel slag powder or glass powder thermal spraying device (9) to flameout, and the steel slag powder or glass powder thermal spraying device does not heat and melt the steel slag powder or glass powder and then sprays the steel slag powder or glass powder onto the hollow core roller (0); the computer control instrument closes a ceramic valve (18) arranged on a refractory ceramic pipe between the ceramic spiral die casting machine (17) and the annular molten steel water outlet (10), then presses the annular sealer into the annular molten steel water outlet (10) through a spiral feeding device of the annular sealer, fuel gas sprayed out of a nozzle of the annular combustor is ignited, flue gas generated by the annular combustor enters a gap between the refractory ceramic pipe and the heat preservation pipe, and solidification of the annular molten steel water outlet (10) and heat preservation managed molten iron is prevented; after the screw counter of the screw feeding elevator gives data indicating that the equilateral triangle lifting plate (7) of the screw feeding elevator has fallen to the lowest position, the computer controller stops the motor (5) of the screw feeding elevator; three hands of the roller remover (11) are driven by a spiral feeding device of the roller remover (11) to extend out and press the upper end of the seamless steel pipe, water pressed out from a water pump (20) enters a hollow core roller (0) through an electromagnetic water valve (22) which is electrified to be opened, the hollow core roller (0) is cooled and contracted, a gap is formed between the hollow core roller (0) and the seamless steel pipe, and a steel slag melt film or a glass melt film between the hollow core roller (0) and the seamless steel pipe plays a role in lubrication; the computer control instrument enables a motor (5) of the spiral feeding elevator to rotate anticlockwise to drive three screws (6) of the spiral feeding elevator to rotate clockwise, three screw ends of the spiral feeding elevator rotate clockwise in nuts on the top angles of an equilateral triangle lifting plate (7) of the spiral feeding elevator respectively, so that the equilateral triangle lifting plate (7) of the spiral feeding elevator moves upwards, and the hollow core roller (0) is pulled out of the seamless steel pipe; cooling the seamless steel pipe by water flowing from the hollow core roller (0) into the seamless steel pipe and quenching the seamless steel pipe; after the equilateral triangle lifting plate (7) of the spiral feeding lifter gives out data and the equilateral triangle lifting plate is lifted to the highest position, the hollow core roller is pulled out of the seamless steel tube, the electromagnetic water valve (22) is powered off by the computer controller, water pressed out of the water pump (20) does not enter the hollow core roller (0) any more, the motor (5) of the spiral feeding lifter stops rotating by the computer controller, three hands of the roller stripper (11) retract under the drive of the spiral feeding device of the roller stripper, the annular sealer is pulled out of the annular molten steel water outlet (10) by the computer controller through the spiral feeding device of the annular sealer, the position of the roller is adjusted by the spiral feeding device of the roller counter according to the data given by each group of roller devices (12), the roller motor stops rotating to ensure that the roller does not roll the seamless steel tube any more, and the three electromagnets are powered off to enable the three arc plates to return to the horizontal position under the action of the torsion spring to prepare for manufacturing of the next seamless steel tube; the seamless steel pipe falls into the lower sections of the three support rods (4) of the spiral feeding elevator under the action of gravity and is taken onto a metal belt of the metal belt conveyor by a robot.
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